The 301 And 310 Interface Modules - Siemens S5-135U/155U System Manual

7.2

The 301 and 310 Interface Modules

The IM 301 is used to connect I/O modules and signal preprocessing modules
(IPs) to a CC in a distributed arrangement (allowing for possible
configurations) via an
expansion unit.
You can connect up to four EUs to a CC in distributed arrangement via the
IM 301. If you use the 721 connecting cable, the total cable length from the
CC to the last EU may be up to 200 m. The distributed connection is made
via the lower front connector of the module. Use the IM 310 interface
module in the EU to be connected in a distributed arrangement:
EU Interface Module
IM 301
Apart from the distributed EUs, you can connect the following expansion
units in a centralized arrangement:
The centralized connection is made via the upper front connector of the
module. Use the following interface modules, according to the EU to be
connected in a centralized arrangement:
EU Interface Module
IM 301-5
IM 301-3
Unused centralized connections of the IM 301-3 and unused distributed
connections of the IM 301-3 and IM 301-5 must be terminated with
terminators. The same applies to the last IM 310.
You may only set module addresses in the EU which you are not yet using in
the CC. This applies to the normal (P) and extended (O) areas.
System Manual
C79000-G8576-C199-06
EU 183U
EU 185U (only input/output modules)
EU Type
EU 183U,
EU 185U (only I/O
modules)
EU 183U
EU 184U
EU 187U
EU Type
EU 184U, EU 187U
EU 183U
Interface Modules
CC Interface Module
IM 310
CC Interface Module
IM 312-5
IM 312-3
7-9